Lock.



B. BORLANDl LOCK.

APPLICATION FILED rm. s, 1906. RBNEWBD MAB. 13, 191s.

l ,075,1 39. Patented Oct. 7, 1913.

4 SHEETS-SHEET l.

B. BORLAND.

, LOCK. APPLICATION FILED PEB. s, 1906. RENEWED MAE. 1a. 1913.

l @'75 l39 Patented 0015.7, 1913. '9 9 y 4 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPH COA, wAsmNcToN. D. c,

B. BORLAND.

LOCK.

APPLIOATION FILED 1113.8, 1906. RENEWED MAR. 13. 1913.

l 075,1 39, Patented 0013.7, 1913. 4 SHEETS-SHEET 3.

J//O 8j, 3103,15/ @E l l 55 e@ B. BORLAND.

LOCK.

APPLICATION FILED TBB. 8, 1906. RENEWED MAR. 13, 1913.

1,075,139. :9mm-.ea 0Gt.7,1913.

4 SHEETS- SHEET 4,

coLUMmA PLANOQRAPH Co.,w.\sH:Na1'oN. u. c.

1TB@ STATES? PATEN 1 QFFQE.

BRUCE BORLAND, OF CHICAGO, ILLINOIS.

LOCK.

Application filed February 8, 1906, Serial No. 300,074. Renewed March13, 1913.

T0 all t0/0m it may concern Be it known that I, BRUCE BORLAND, a citizenof the United States; residing at Chicago, in the county of Cook andState of Illinois, have invented certain new and useful Improvements inLocks, of which the following is a speciiication, reference being hadtherein to the accompanying drawings.

This invention relates to improvements in multiple key lockspart-icularly adapted for use with the drawers or boxes of safetydeposit vaults, and the like, although certain features thereof areapplicable for use with other locks.

The invention consists of the organizations and arrangements of partshereinafter' particularly described and then pointed out in the appendedclaims.

ln the accompanying drawings- Figure 1 is a view of the lock inelevation with the cover removed and showing the bolt in its shot orlocked position; Fig. 2 is a similar view with the locking bolt in itsshot position, the holt locking dog being released; F ig. 3 is a likeview showing the locking bolt retracted; Fig. 4 is a section on the line4-4 of Fig. 1; Fig. 5 is a plan view of the lock showing the primarytumblers disengaged from their operating pinions to reset the lock, thatis to change the combinatio-n and adapt the same to a new key; Fig. 6 isa detail perspective view, diagrammatic in character, of the primary andmaster t-umblers, and certain associated parts, showing such tumblers intheir normal or locking positions; Fig. 7 is a similar view of thetumblers showing the parts in their unlocking positions; Fig. 8 is asectional view on the line 8 8 of Fig. 3; Fig. 9 is a detail view of thesliding plate on which the primary tumblers are mounted; Fig. 10 is adetail view of one of the` washers associated with the master tumblers;Fig. 11 is a similar view of the one of the washers for the primarytumblers and their operating pinions; Fig. 12 illustrates the depositorskey used for actuating the primary tumblers; Fig. 13 is a view of anauxiliary key for lining up the primary tumblers; F ig. 14 is a detailof the guards key employed for actuating the master tumblers; Fig. 15 isan end view of the same; Fig. 16 is a diagrammatic view showing thearrangement of the groove in the guards key; Fig. 17 is a similar viewof the key Specification of Letters Patent.

Patented Qct. 7, 1913.

Serial No. 754,127.

employed in resetting the lock; Fig. 18 is a view of a key employed foralining the master tumblers; Fig. 19 is an end view of the same; Fig. 20is a longitudinal sectional view of such key; and Fig. 21 is a similarview of an auxiliary key.

Referring to the drawings, 25 indicates a suitable case which is shownas rectangular and provided at one end with a bolt opening 26. A coverplate 27 is suitably secured to the case 25 and is provided near itsrear end with a key sleeve 28 and between such sleeve and the front endof the lock with a second sleeve 29. Suitable openings 30 passingthrough the cover and case are provided for screws to secure the lock inposition.

The locking bolt 31, which extends through the opening 26, is providedwithin the case with a head 32 adapted when the -bolt is thrown to abutagainst the front end of the lock case, as shown for example in Fig. 1.This head is provided at its upper end with a rearwardly extending flattail 33, located adjacent the cover plate, Figs. 1 and 4, and which isin the form of a rack bar having its teeth extending inwardly. Beyondthe rack teeth the tail 33 is provided with a curved or concave portion34. At the bottom of the case the bolt 31 is provided with a second tail35 which rests against the back wall of the case and to which ispivoted, as at 36, a locking do-g or latch 37. The thickness or depth ofthe dog is substantially the distance between the tail 35 and the coverplate 27. The rear or locking end of the dog 37 is adapted to engage,when the bolt is in locked position, Fig. 1, with a stop consisting` inthe present instance of a shoulder 38 formed in the lock case. Betweenthe shoulder 38 and the bottom wall of the lock is a longitudinal cavity39 into which the locking end of the dog slides when the bolt 31 isretracted, as shown in Fig. 3, a shoulder 40 on the dog then cooperatingwith the stop 38 to limit the retractive movement of the bolt. The frontend of the dog is in the form of a rack bar, and at the rear of theteeth thereof is an enlarged tooth or lug 41. The dog 37 may be held inits locking position by gravity, as the pivot 36 is back of the centerthereof, but preferably a suitable spring is employed for the purpose,such as the leaf spring 42, the front end of which is fixed to the rear.end of the bolt- .tail 35 while its other end reacts against a pin 43on the doo'.

rThe rear portion of the lock case is made solid, as at 44, having acavity 45 which is open at its front side, as at 46. rl`he rear wall ofthis cavity is provided with a recess 47. The back wall of' the case atthe bottom of the cavity 45 is stepped up as at 48, Fig. 4, and a keyguide consisting of a post 49 is fixed in the stepped up portion 48 and.eX- tends into the circular key opening of the sleeve 23 concentricwith suchopening. The post 49 is provided'with a guide stud 50 at itsfree end. A pinion 5l is located in the bottom of the cavity 45 andvabove such pinion are rotatable tumblers 52, which are hereindesignated master tumblers, tour ot such tumblers being shown in thepresent instance. rllhe pinion 51 and tumblers 52 are concentric withthe post 49 andare sep-V arated from each other by washers 53 into theopening of each of which extends, as shown in Fig. 4 a hub portion 54 ofa tumbler, the washers-thus'providing pivot supports for the tumblersand-keeping them centered. By reason of the friction between the washersand tumblers the latter are held against accidental rotation. A similarwasher is located between the pinion 5lA and` the bottom ofl the cavi-ty45. rlhese washers fit the cavity 45 snugly and .arel provided withtongues 55 (Fig. 10) which project into the recess 47 and preventmove-ment of the same. Each of the tumblers 52 and the piniono5l isprovided with a central opening through which the key post 49 extends,such openings being in alinement and of greater diameter than the post.Each opening is provided with inwardly directed teeth and at a certainpoint therein a tooth is omitted providing a space 56. Each tumbler 52is in the form Aof a peripheral gear provided with at least one or insome instances two missing teeth. For examples, the upper and secondtumblers 52, as shown in Figs. 6 and 7, each has one tooth missingproviding a recess 57, while the third and fourth each has a recess 57and a recess 58. As shown in the drawings, the pinion 5l and tumblers 52project through the opening 46 in the wall of the cavity 45 and at thispoint the washers 53 are cut away as at 59 so that the teeth of thetumblers will project beyond the same.

A post 60 is pivoted, as shown in Fig. 4, in the back wall and cover 27of the case and this post is provided at its lower end with a segmentalcam or eccentric 61. A pinion 62 is fixed to the post above the cam 6lso as to engage the pinion 5l. Above the pinion 62 the post is providedwith a block providing a cam 63which is radial to the post and has arounded nose, rllhe cams 6l and 63 are at a fixed angle with relationpair of teeth or to each other being at substantially. a :right angle inthe present instance. The cam 63 is substantially vthe height of thecombined thickness of the tumblers 52 and washers 53, as shown in Fig.4, and at its rear side has a fins 64 and 65 which are radial to thepost 60. The teeth 64 and 65 are in line with spaces between the teethof the pinion 62. The teeth signed to enter 52 when the recesses areproperly alined to receive-the same to permit of the turning of thepinion 62 in one directiony or the-other for the purposes hereinafterexplained.

The rear wall of the case in line Vwith the sleeve 29 is provided vwitha stepped upportion 66 formed with a socket 67 in its bottom. A wall 68is formed in the lock case toprovide a circular well 69 having anopening in its front side. A key post 70 is seated in the sleeve 29 andis provided with a reduced extension 7l passing through the well 69 4andhaving its end seated in the socket 67. A key groove passes through thepost and the extension 71, as shown in Fig. 4. rllhe post 70 has fixedthereto just within the cover 27 a pinion 72 havingA a concentric-toothless portion 73 which is adapted to coperate with the curvedportion 34 of the bolt tail 33, as hereinafter described. A series offive gears 74 having central `alined openings 7 5, throughv which theextension 71 passes,is located in the cavity 69 `being spaced apart bysuitable friction washers 76, the gears beingpivoted thereon in the sameman-ner as the tumblers 52. -Each of thev gears 74 has a key opening 77,one of the walls Yof which is parallel with ,line radial to the gears`while the other wall is stepped as at 7S, five steps being provided inthe present instance and the stepped portion extending from the outerend of the straight wall back to the opening 75 so that thestepsdecrease in distance from the center o-f` the tumbler as the steppedportion recedes to the opening 75. Each of the gears is provided with asolid or toothless portion 79, to limit the movement of such gears tosuch distance as is required for the proper operation of the lock.

A sliding plate is adapted to slide on the back'wall of the case andthis plate is provided at suitable points with elongated.

slots Sl through which pass guide screws or studs S2 fixed to the case.This plate is cut out, as at 33, to clear the wall 66 and at its lrearend is bifurcated at 34, the cam 6l being located in the bifurcation. Atits front end the plate has fixed thereto a post which in the presentinstance extends to the cover 27 having its end flatto slidingly engagesuch cover. lRotatable toothed tuinblers 36, corresponding in number tothe gears 74, and normally in engagement there- 64 and 65 are de-L therecesses in the tumblers with, are pivoted on Ithe post 85. Thesetumblers are spaced apart by extensions of the washers 7G. Each of thetumblers 86 at a certain point has a missing tooth to provide a slot 87,such slots being designed to be brought into register as hereinafterdescribed, and the space between one pair of the teeth of each tumbleris enlarged to provide a rectangular recess 88. A post 89 is fixed tothe back wall of the case in such position that when the recesses S8 arein alinement and the plate 80 is moved forward the slots 88 will engagethe post thereby permitting of the movement of the plate and thedisengagement of the tumblers 85 from the gears 74.

A pinion 90 is pivoted at the end of the post 85 being provided with aslot similar to the slots S7 of the tumblers and a recess similar to therecesses 8S of such tumblers. This pinion is adapted to mesh with thegear 72 and is provided with` a toothless concave portion 91 at itsperiphery adapted to cooperate with the convex toothless portion of thepinion 72, by which the pinion 90 is locked against rotation.

The key for operating the tumblers 86 to bring the slots 87 thereof intoalinement to receive the lug 4l of the bolt locking dog and which isdesignated the depositors key, is illustrated in Fig. 12. This key, 92,consists in the present instance of a flat plate of suitable size to titin the key slot provided therefor, and the bits 93 thereof are soarranged as to coperate with the steps of the key openings in the gears74. When the key is inserted in the lock and turned to the right orclockwise in the direction of the arrow in Fig. G each gear is picked upand moved as the bit of the key associated with such gear comes intoengagement with the step with which it is designed to coperate. Theslots 87 are normally out of alinement (Fig. 6), and the movement ofeach gear is just sufficient, when the key is turned the proper distancewhich in the present instance is one half a rotation, to bring all theslots into alinement (Fig. 7) and opposite the lug l1 of the dog. Duringthis operation the toothless portion of the gear 72 moves past thetoot-hless portion of the pinion 90 until at the proper moment the firstadvancing tooth of the gear 72 comes into engagement with the firsttooth of the pinion 90 to move the pinion the proper distance to line upits slot 87 with the slots S7' of the tumblers (Fig. 7). The key 92 hasa notch 94 adapted to receive a shoulder 95 at the entrance of thesleeve 29 in the usual manner to prevent withdrawal of the key while thepinions are being turned.

The guards key associated with the master tumblers 52 consists of atubular body portion 96 into which extends a cylindrical shell 97. Theportion of this shell that the recesses 57 are out of alinement.

`When this key is inserted on the guide post 4-9 the stud 5() thereofenters the slot 98 and while the straight portion of such slot passesalong' the stud the key is held from turning. As soon, however, as thekey pinion engages the first tumbler 52 the sinuous portion of the slotcomes into engagement with the stud 50 so that as the key is turned thetumbler is rotated, and as each successive tumbler is picked up owing tothe course of the slot it is turned in unison with the precedingtumblers so that when the last tumbler is engaged and turned the slots5.7 of the ytumblers are alined and in position to receive the toot-h 65when the pinion 62 is turned by the action of the pinion 5l.

The normal or locked positions of all the parts are shown in Fig. l. Tounlock the lock the deposito-rs key is inserted and turned clockwiseabout one half a rotation. This brings the slots 87 of the tumblers 86into position to receive the lug ll. Further movement of the key isprevented by reason of the fact that although the first advancing toothof the pinion 72 comes int-o engage ment with the end tooth of the bolttail 33, the bolt is still locked by the dog.

The guards key is now inserted in the lock to release the locking dog3'?. As soon as the guards key has entered the lock far enough to engagethe pinion 51 the key is turned clockwise, this being permit-ted by theterminal of the key slot 99, moving the pinion 62 contra-clockwise andthrusting the cam 63 against the end of the dog 37, the tooth 65entering the alined slots (F 3) as the tumblers 52 and pinion 5l areturned together. This disengages the dog from the shoulder 38, as shownin Fig. 2, the lug 41 entering the alined recesses 87 in the tumblers8G. Until the slots or gates of the tumblers 52 are lined up movement ofthe cam is prevented owing to the obstruction presented to the tooth 65by the teeth of the tumble-rs.

The object in having the tooth 65 aline@ with a space in the pinion 62is to bring it opposite to the alined slots in the tumblers 52 suchslots being provided by the omission of a tooth which if present wouldof course correspond with aspace in the pinion The preliminary rotationof the pinions 74 by the key 92 tov bring the tumblers 86 into alinedposit-ion, carries the .toothless po-rtion of the pinion 72 out ofengagement with the concave portion 34 ofthe b Olt tail 33, and theteeth of the pinion 72 being now in engagement with the teeth of thebolt tail, further rotation of the key 92 retracts the bolt, the rearend of the dog entering the cavity 39, as shown in Fig. 3. During theretraction of the bolt the tumblers 86 are rotated in a contrarydirection and as they cooperate with the teeth on the lock-ing'dogmotion is also imparted to the bolt through such bolt tail. This insuresan even movement of the bolt and provides a stronger constructiomthat iso-ne less liable to breakage.

lin locking, the operation heretofore described is reversed, but owingto the engagement of the pinion 90 and tumblers 86 with the teeth of thebolt dog 37, such tumblers are rotated in unison, until the parts assumethe'positions of Fig. 2. Then as the key 92 moves back through `vthe`key openings 77 into engagement with the straight wall of each pinion74, the tumbler associated with the pinion'is restored to its originalposition by the movement of the pinion 74. rlhis insures the restorationof the tumblers 80 to their proper relative positions. The straight wallof each key opening 77 is offset from the radial one half the thicknessof the key so that the key will bear squarely against-such wall, asshown in Fig. 1.

ln unlocking, both keys are necessary, as the guards key is required torelease the locking dog and this cannot be done until the depositors keyhas set the tumblers into unlocking position. For locking, however, theguards key is not necessary as when it is withdrawn the tumblers 52 arerestored as well as the cam, and then the bolt may be thrown simply bythe depositors key. his key can not be withdrawn, however, until thebolt is thrown.

When it is desired to change the key 92 for another d-epositors key,that is to reset the lock or change its combination, the old key 92 isinserted in t-he lock and the tumblers thrown into position to bring theslots -87 thereof in alinement which also alines the slots S8. Aresetting key 100 which will be held by a custodian such as the managerof the vault, and which is similar to the guards key, but having itssinuous portion of diiferent arrangement, as indicated by 101, Fig. 17,is inserted into the key sleeve 28. The groove of this key is soarranged as to bring the slots 57 of the two upper tumblers 52 in Figs.6 and 7 into alincment with the slots 58 of the lower tumblers so thatwhen the key engages the pinion 51 and is turned contra-clockwise thetooth 64 will enter the alined gates or slots as the pinion G2 @isturned.y rThis action moves the cam 61 against the front Loraio wall ofthe bifurcation S4 of the plate 8O sliding such plate forward anddisengaging the tumblers 86 from Athe gears 74. The customers key 92 isnow turned to locking or normal position and withdrawn and thel-new-customers key is then inserted. rJhis key is now turned so as tomove the `gears 74 into such position as to bring the first tooth of thepinion 72 into engagement with the end tooth of the bolt tail 33, whichis the position of the key under normal conditions when the slots 87 ofthe tumblers 86 -arealined. |The key 100 is now turned to r-etract thesliding plate thereby'throwing the tumblers 86 into engagement Ywith thegears 74, and the lock can then only be operated by the new key untilthe combination-is again changed.

The ypart-sv 74 and 86 constitute two-part Y tumblers and by moving thepack composed of-the parts 86 by sliding the plate 80 to disengage thispack from the pack composed ofthe partsp74 these tumblers may bel resetto different combinations for different cust-omers lkeys as above'setforth and the packs then rengaged by reverse movement of theplate sothat thelock is set upon a particular customers key, the movements ofthe plate to engage and disengage the packs being accomplished by thecam or eccentric 61 acting on the plate and which is locked and unlockedand operated for these respective purposes by the managers resettinglock, vthe movement of the key of this latter lock being transmitted tothe eccentric through the intermediatev pinions 51 and 62. The managerslock constitutes a supplemental safety lock to prevent unauthorizedresetting of the combination.

ln the event that the tumblers S6 are moved out of their proper relativepositions, owing to an attempt to pick the lock, for instance, l employa key 102 such as shown in Fig. 13, for restoring the same. This key isprovided with an elongated bit 103. By inserting` this key in the lockand turning the saine contra-clockwise the straight walls of the keyopenings 77 in they gears 74 will be placed in alinement, this being thecondition of the lock when the gears are in normal positions, and thisrestoring` of the gears properly positions the tumblers actuatedthereby.

n the event that the tumblers 52 accidentally become jolted o-r thrownout of prop-er position, thesetumblers may also be restored through themedium of a suitable keyr 104 substantially like the guards key exceptthat th-evcylindrical shell 105 terminates just inside the tubular bodyits project-ing portion being toothed as at 106. The slot 107 of'thiskey, such slot being straight, is out of engagement with. the guide pin50-when the key is in thevlock, so that the key may be turned freely ineither direction. This key has an enlarged tooth 108 designed to enterthe recesses 56 in the tumblers 52, and is extended beyond the key asshown in Figs. 18 and 20. It is to be understood that when the tumblers52 are in proper positions the spaces 56 are in a definite relation toone another. If when the proper customers key is in and turned tounlocking position, upon inserting the guards key in the lock andturning the same it will not release the dog, it will then be known thatthe tumblers have been moved and are not in proper position. The key 104is then entered on the post 49 and turned until the end of the tooth 108linds the recess 56 in the first tumbler and so on until it engages withand enters the recess 56 of each tumbler. The key is then turned untilits slot 107 is in line with the stud 50. The key may then be withdrawn.`With this key it may happen that when withdrawn the tumblers may not bein exactly the proper position, for although lined up properly withrelation to each other they may be a fraction of a tocth out of relativerelation with the guide stud 50. rlfhis is rendered possible by reasonof the fact that as the key 104 may turn freely it may be moved slightlyafter becoming disengaged with the tumblers to withdraw 'it from thepost 49. To remedy this and insure accurate alinement of the tumblerswith reference te the stud 50, I employ an auxiliary key 109 whichdiffers from the key 104 only in that the cylindrical shell 110 extendsinto the body of the key in the same manner as the guards key but hasits slot 111 straight throughout its length. This key will remedy adisalinement to the extent of a fraction of a tooth owing to the factthat the projecting end or its enlarged tooth is beveled, so that ifth-e tumblers are slightly oli'l in position, the beveled end will enterthe alined recesses moving over the tumblers into absolutely accurateposition. This key cannot turn owing to the engagement oi its slot withthe stud 50.

Having described my invention what I claim as new and desire to secureby Letters Patent of the United States, is-

1. In a permutation lock, a secondary tumbler having a predeterminedoperative position, a. primary tumbler geared into the secondary tumblerand capable of mo-ving the same to said predetermined position by itsown motion to another predetermined position, the primary tumbler beingprovided with dierently positioned steps one of which is engaged by thekey ward according to the length of the key ward, and means fordisengaging the secondary tumbler from the primary tumbler so that thepredetermined position of the primary tumbler may be changed and thesecondary tumbler reengaged.

2. In a permutation lock, a plurality of secondary tumblers having acommon predetermined operative position, a primary tumbler geared intoeach secondary tumbler and capable of moving the same to saidpredetermined position by its own motion to another predeterminedposition, the said primary tumbler being provided with dilterentlypositioned steps one of which is engaged by the key ward according tothe length or" the key ward, and means for Simultaneously disengagingall of the secondary tumblers from the primary tumblers so that thepredetermined positions of the primary tumblers may be changed and the.secondary tumblers rengaged.

3. In a lock, the comb-ination with a bolt and a locking dog therefor,of means to release the dog, and key-operated tumblers to cooperate withthe dog to retract the bolt.

4. In alock, the combination with a. bolt and a locking dog therefor, ofmeans to release the dog, and keyoperated gears for communicating motionto the dog to retract the bolt.

5. In a` lock, the combination with a bolt and a locking dog therefor,of tumblers, and key operated gears to rst turn the tumblers intoposition to permit of the unlocking ot' the dog` and then retract thebody by coperating with the dog, and means to release the dog.

6. In a lock, thecombination with a. bolt, a locking dog pivoted theretoand having a rack bar, of tumblers for preventing movement of the dogexcept when in predetermined position, and gears for moving the tumblersfirst into such predetermined position, wherein they are engaged by therack bar upon the release ot the dog and then impart motion to the dogto retract the bolt, and means to release the dog.

7. In a lock, the combination with a bolt having a. tail provided with arack bar, and a locking dog pivoted to the bolt and also provided with arack bar, of a` cam to release the dog, pivoted tumblers normallypreventing movement of the cam, a second set of pivoted tumblers tosecure the dog against movement except when in predetermined position,key operated gears engaging the latter tumblers to turn the same firstinto their predetermined position to permit of the release of the dogunder the action of the cam, such tumblers then being engaged by therack bar of the dog, one ot' the said gears engaging the bolt tail rack,whereby motion is imparted to the bolt at a plurality of points toretract the same.

8. In a lock, the combination with a bolt and a locking dog therefor,ofkey tumblers adapted to be moved to predetermined positions to permitof the release of the dog, and a connection between the bolt and thetumblers whereby when the bolt is thrown the g tumblers aresimultaneously restored to such predetermined posit-ions and are thenreturned to their original positions by the' key.

9. in a lock, the combination with a bolt and a locking dog thereforhaving a rack bar,

which the tumblers are moved to predeterthe dog, the said dog whenreleased moving its rack bar into engagement with the tumblers and beingmaintained in such engagement during the retraction of the bolt, wherebywhen the bolt is thrown the tuinblers are restored in unison-to theirpredetermined positionand then returned to their original position bythelocking'movement of the key operated gears.

10. ln a lock, a plurality of rotatable tumblers havingv toothedopenings, a key having teeth to cooperate with the tumbler teeth, andmeans on the lock to 'guide the vkey to move the said tumblers intopredetermined position'.

11. ln a lock, a plurality of rotatable tuinblers having central alinedtoothedopenings, a key having its end in the form of a pinion adapted toenter the tumbler openings and engage the teeth, and means on the lockto guide the keyto move the ltumble-rs into predetermined position.

12.1n a lock, a plurality of rotatable tumblers having central alinedtoothed openings, friction was-hers separating the tuinbl-ers and onwhich the latter' areV pivote'd, av key' post with which the tumblersare concentric 4and having a stud, and a key having a pinion to engagethe toothed openings and a guide groove for the stud whereby as the keyis inserted in the lock and turned the tumblers are successively pickedup and rotated to bring the tumblers into predetermined position'.

18. ln a multiple key lock, a bolt, a plurality of two-part tuinbl-ersthe respective parts whereof force-action with dierentkeys, a plate'- ony which the resettable parts of the tumblers are mounted, means for'moving the plate for resetting the'A tumblers, and a key-oper'- 1 atedresetting lock for' locking' and unlocking and actuating theVlplateactuating means.

14C. In a multiple key lock, a bolt, a plurality of two-part tumblersthe respective parts whereof are constructed to be reset Vfor co-actionwith different keys, 1a plate on:

which 'the r'esettab'le parts of the tumbler-s are mounted, anleccentric for' moving the plate for resetting the 'tumhlers, Iandakeyoperated resetting lock -for locking and unlocking and actuating theeccentric.

15'. 'In a multiple key lock, a bolt, a plurality of locking tumblerscapable `ofl cooperation with the bolt in dierent combi-- areconstructed to be reset key-lock operating the eccentric lagainstresetting the combination when locked.A of nivo-ted tumblers, keyoperated gears by 16. ln a multiple-key lock, a bolt, a plurality oftwo-part tumblers the respective mined position to permit of the releaseof parts of which are constructed. to be reset i force-action withdifferent keys, a pla-te on 1 which the resettable parts of the tumblers,are mounted', an' 1 plate, a key-'operated Vresetting lock, and' Ip'inions interposed and resetting lock and moving the eccentric -toconnect and.

eccentric for moving the between the 4 eccentric disconnect thetwo-parts of the tumblers when the resetting lock is operated: by 'itskey.

17. In amultip-le-key lock, a bolt,I aphirality of locking tumblersadaptedV to beset for co-action with different keys, va platecontrolling the 'resetting' of the' tumblers, an eccentric vto move theplate, a key-operated fr'esetting lock operating the eccentric whenunlocked Iand locking the eccentric against*v resetting the combination.when locked, the arrangement of parts'beingfsuch that the tumblers arelocked against rese-ttin'g for a different key until they are moved toposition to unlock the bolt and. the resetting' lock-operates thepla-te'.

18. In a` changeabl'e'key" lock, a bolt, sepa'- r'ately ,organizedmastert tuinblers and locking tumblers both of which are Setto retractthe bolt, a plate for resetting the locking tumblei's, al guards key foractuating themaster-tumblers, a key for actuatingzthe locking-tumblersto position for:v withdrawing thewbol-t, and a managers'key foractuating the master-tumblers'- to move the plate. 19.1211' a changeablekey lock, a bolt, separately` organized lmaster tumblers and lockingtumblersboth of whichar'e set to retract the bolina.v plate forresetting the lock- 'f ing -tu1nblers, an eccentric actuatingV theplate, a gua-rds key 'for' actuating the master-tumblersl,ra key fforactuatingv the locking-tumblers to position forr` withdrawing the bolt,"and'a-inanagers kkey, for? actuating the iniaster-tumb'lers to move theeccentric `toV actuate the plate'. y

20. ln a lock, the combination vwith a bolt and a `locking dog therefor,tumble'rs 'adapted to be moved to permit the release of the dog', acarrier* onfwhichy the tumblers are mounted, key operated gears 'forturning 'the tum-biere, a camfor" sliding the carrier, and guardstumblers adapted to be moved into predetermined vposition to permit-ofmovement of the cam;

21; In a lock, Ithe combination with a bolt and ay locking dog therefor,rotatable .tuniylolers' adapted to vbe moved vinto"predeterdog, asliding plate provided with a post on which the tumblers are pivoted,key operated gears for turning the tumblers, a pair of cams having apinion, a gear meshing with the pinion, and a plurality of guardstumblers to prevent movement of the cams, whereby when the guardstumblers are in register in one position and the gear is turned thesliding plate will be moved by one of the cams to disengage the tumblerscarried thereby from the gears to reset the lock and when in anotherposition and the gear is turned the dog is released by-the other cam.

22. In a lock, the combination with a bolt and a looking dog therefor,of a plurality of tumblers adapted to be moved into predeterminedposition to permit the release of the looking dog, gears for turning thetumblers, such gears having normally alined key openings one wall ofwhich is straight while the other wall is stepped to ooperate with thebits of the key associated therewith.

28. In a look, the combination with a bolt and a locking dog therefor,tumblers adapted to be moved into a position of register to permit therelease of the dog, frietionally held gears for turning the tumblers,such gears having normally alined key openings, each having one wallstraight and substantially radial and the other stepped, and a keyhaving a single bit to engage the straight walls to aline the openings.

24. In a lock, the Combination with a plurality of tumblers each havingaxial toothed opening provided with a recess and a guide post having astud, of a key eonsisting of a shell having a pinion at its end, suchpinion having a longitudinal slot for the stud and a tooth adapted toenter the recesses of the tumblers as the key is inserted in the look.

25. In a lock, the combination with tumblers each having a centraltoothed opening provided with a recess, a post in the alined openingsand having a stud, and a toothed key adapted to the tumbler openings andhaving a tooth to enter the recess and a longitudinal slot whichooperating with the stud as the key enters the lock prevents turning ofthe key.

In testimony whereof I aHiX my signature in presence of two witnesses.

BRUCE BORLAND.

Witnesses:

ARTHUR B. SEIBOLD, ELIZABETH MoLiToR.

Copies of 'this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

